Renal transplantation (RTx) in carriers of human T-cell lymphotropic virus type 1 (HTLV-1) has a risk of developing overt leukemia upon immunosuppression. Although there have been a few reports of such cases, it is unclear HTLV-1 carrier if patients on the modern immunosuppressants would develop HTLV-1-associated myelopathy or adult T-cell leukemia lymphoma.We retrospectively reviewed the clinical outcomes of RTx in nine HTLV-1 carriers to assess a risk of developing leukemia from 2002 to 2011 using immunosuppression with a calcineurin inhibitor, mycophenolate mofetil (MMF), and steroid. The anti-CD25 monoclonal antibody basiliximab was used for induction. In two cases of ABO-incompatible RTx, the rituximab was also administered before RTx.The ratio of male to female subjects was 2 to 7 with an overall mean recipient age of 54.3 ± 8.1 years. We prescribed cyclosporine (n = 5) or tacrolimus (n = 4). There was only one graft loss due to the death caused by aspiration pneumonia with a functioning graft. No one developed overt leukemia with combined treatment with MMF, basiliximab and rituximab.We concluded that RTx in HTLV-1 carriers could be performed using a modern immunosuppressive regimen, without the risk of developing leukemia.